Window-ventilator.



PATEN TED FEB. 13

glwzntoz D SGHAFER WINDOW VENTILATOR. APPLICATION FILED MAYB 1905 :HIH Pm y e i q/vdn zoaeo "NITED STATES PATENT orrrc DITRI C-H SCHAFER, 0F SACRAMENTO, CALIFORNIA.

WlNDOW-VENTILATOR. i

Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed May 8, 1905. Serial No. 258,631;

To all whom it may concern:

Be it known that I, Drrnron SOHAFER', a citizen of the United States, residing at Sacramento, in the county of Sacramento and State of California, have invented certain Ventilators-of which the following is a specification.

The invention relates to ventilators to be has. for its ,obj ect the provision of a structure by which a circulation of air may be main tained and at the same time dust and insects be excluded from. the room.

' My invention has especial reference to the improvement of the construction of ventilator shown inP-atent No.7 69,570, granted to me on September 6, 1904. In said patent a plate of rigid material is secured inside of the tween the sash and plate, this construction preventing a direct draft from the opening underthe sash when raised.

Y In 'myimprovement of-which this is a de- 'scriptionthe plate is ,slidably mounted in'the provided with a-screem,

window-frame and frame secured tOi-ltS' ow'er end, whichis nor- .-'ingress of insects and dust,

riding-means. for preventing ingre'ss'jof insects at the top of thew ildow when the -u per sash is lowered tolpermit the escape o [the foul air from the room, consistin of screen 40 frames soarranged as to cover t e'opening made by lowering said upper sash. 1

The construction and operation of in vention will be described in detail hereinafter and illustrated in the accompanying draw ings, inwhich- Figure 1 is a sectional view of-a window, showing the sashes closed; Fl .5 2, a view showingthesashes open and wit the defiec or-plate in the position shown in.Fig.=1';'F1g;

struction of the ventilator 'on the upper'portion of the window andwith the plate at the lower portion ofthe casing raised to permit a direct draft. v

In the drawings similar reference characnew and useful Improvements in Window-' applied to the windows ofdwellings, &c., and

window-sash and resting-on the sill, and a screen-frame is secured to the bottom rail of the sash and arranged to cover the space hemally seamen-1a boxing under the-sill, but which when the plate 1, is raised covers the opening made thereby,thus permitting a di.-

rect draft intothe room, butpreventing the I jftoruSlower ed A further improvement consists pro;

. ,N represents a 3, aview showing a modification of'the con-.-

from the outside admitte ters indicate corresponding parts throughout the several views.

A represents the side posts of a window frame; B, the upper sash; C, the lower sash; D, the sill. V V

E represents a frame having a plate of transparent material, preferably glass, therein and slidably mounted in grooves *F in the cover the .to of slot I when the frame G is retiredinto t e box or recess H. s

The box or recess H may be made vertically'beneath the frame E and slot 1; but

when desired it may be made with a pitch toward the ouside of the building, as shown in the'drawings, in Whichhcase it may be found desirable to provide the ends of the boxv with segmental grooves K and provide the ends of the frame G with rollers k to ride in sai 1 ooves and guide the free edge of the frame into andout of said box or recess.

I On the bottom rail of the lower sash is secured a screen-frame L, and hinged-to the under 'side of-its free edge another frame M, having-a length of'weather stii ping secured e that'when the Window is ralsed engagest e-transparent plate in'frame Eto make: an insect-proof joint.

"dc-groove in each side post A, andvu a re] er journaled on eachend of'the-lower edgejof frame M to ride in the cove N in the adjacent post, The; roove a as clearly. shown'inthe drawings, egins near the bottom ra'rl'of the lower sash at it lower 'end, runs vertically upward for a'short distance,-.=and:l then curves toward the inner side of; the window-cas1ng and again vertically "upwarfd ;"soythat when the window. i

closed, as showman? .1,'- the-frame M is folded underthe'frame but whenthe lower sa h is raised; as shown in Figs. 2 and 3, the frame Massumesa vertical-position.

It illbo understood from this description that with the frame'E in its lowermost :positio'nthe lower-sash C may be raised and air over said frame E without, creatmg admit in the, room, while by raising frame E, and with it frame G, air p may be admitted directly through frame G to the room at the same time that it may pour over the top of frame E, and by raising the and dust proof structure at t 1e upper end of the window casing to permit lowering the upper sashto allow the foul air to escape from the room, the structure consisting, as shown in Figs. 1 and 2, of a vertical screen-frame O, secured to the frame A, and a horizontal screen-frame P, secured to the top rail of the upper sash and having a length of weatherstripping Q secured to its free edge to make an insect and dust proof joint between said frames 0 and P.

In Fig. 3 a modification of the structure at the top of the window is shown,.in which the vertical frame 0 is secured to the free edge of frame P and when the sash B is closed disappears into a housing R in the upper end of the window-casing.

S representsweather-stripping secured to I the under side of the bottom rail of the upper sash, which engages the ane in the lower, sash to prevent insects and dust getting into the room when the sashes are open.

- Having thus described my invention, what I claim is- 1. In a window ventilator, a horizontal screen-frame secured to the top rail of the upper sash, and a vertical screen-frame acting in conjunction with said horizontal frame to form an insect and dust proof deflector forthe top of the casing, substantially as shown and described.

stantially as shown and described.

3. In a wvindowventilator, a horizontal screen-frame secured to the top rail of the uper sash, a vertical scree'nframe secured to the free edge of said horizontal frame, and a housing intthe top of the casing to receive.

said vertical frame, substantially as'- shown and described.

4. In a window-ventilator, a frame slidably mounted in the window-casing, a screenframe secured to the lower edge of said frame, a box or casing; beneath the window-sill to receive said screen-frame, and ascreen-frame secured to the bottom rail of the lower sash to bridge the s 'acebetween the sash and the first named ame, substantially as shown and described.

. 5. In a windowventilator,' a frame -slid-' ably mounted in the window-casing,.a screenframe hinged to the lower edge of said frame,

a box or casing beneath the window-sill tov receive said screen-frame, and a horizontal screen-frame secured to the bottom ra1l of the lower sash to bridge the space between said sash and the first-named frame, substantially as shown and described. 1

6. In a window-ventilator, a frame slidably mounted in the window-casing, a screenframe secured to the lower edge of said'frame, a box or casing beneath the window-sill to receive said screen-frame, a screen-frame secure'd to the .bottom rail ofthe lower sash, a screen-frame hinged to the last-named screenframe, and grooves'in the window-casing to guide said hinged frame, substantially as shown and described.

' 7. In a window-ventilator, a frame'slidably mounted in the windowcasing, a screenframe hinged to the lower edge of said frame, 'a box or casing beneath the window-sill to receive said screen-frame, a screen-frame secured to the bottom rail'of the lower sash, a screen-frame hinged to the last-named screenframe, and the window-casing formed with grooves to guide said hinged frame, substantially as shown and described.

In testimony whereof I hereunto afiix my 

